My co-workers have learned that I get hangry, and my manager is to the point where, if I am getting upset about anything, he’ll ask if I’ve had lunch yet…
Or I will mention that I am definitely having lunch in the next few minutes, before I start gnawing on someone’s arm, and he tells me to please take lunch.

Yeah. I get hangry. It’s a real thing.
Just don’t add it to driving in traffic.

I suspect getting hangry has to do with blood sugar level. I know that from experience. My blood sugar sometimes sinks and then I’m both hangry and trembling.
I have diabetics (type II) in the family, and my blood sugar levels go easily up or down (I don’t have diabetics, so far at least). Once I got evidence. There was a diabetes campaign and they were measuring people’s blood sugar in the neighbouring shopping center. Mine was 3. “Go and eat something soon”. “Oh yeah, I’m going home”. Did some quick shopping and when I reached home I could hardly stand…

“Go and eat something soon”. “Oh yeah, I’m going home”. Did some quick shopping and when I reached home I could hardly stand…

I can usually judge my blood sugar by looking at a repeating pattern. Floor tiles while I’m walking is good. If it moves by smoothly, I’m ok. If it skips like still-frame pictures, then I’m in trouble.